The traditional invisible car clothing material on the PVC market is what we often call plastic. For example, the hard water pipe is made of PVC. After being processed into the invisible car clothing material, the structure is still hard, and the beauty and adhesive layer are a problem. It may cause trouble to the car for a long time, and the car paint will be damaged if the quality is too poor. The service life ranges from a few months to one or two years.

TPH在传统材质中添加了增塑剂，经过改良拥有了不错的柔韧性能，但由于材质的关系，使用过程中依旧偏脆，保护能力偏弱，同时TPH材质成本较低，选用的胶层容易脱落，会在漆面产生胶印或遗胶，使用寿命在两三年左右。

TPH adds plasticizer to the traditional material and has good flexibility after improvement. However, due to the material, it is still brittle and weak in protection. At the same time, the cost of TPH material is low, and the selected adhesive layer is easy to fall off, which will produce offset printing or glue residue on the paint surface, with a service life of about two or three years.

TPU是一种热可塑性聚氨酯，优异的耐磨性、耐臭氧性、强度高、弹性好，具有良好的耐低温、耐油性、耐化学药品等性能，绿色；另外TPU的耐寒性也是非常突出的(零下40度没压力)，具有很强的韧性和一定的硬度。是隐形车衣好的材料，使用寿命5-10年。缺点：生产工艺复杂，成本率低，制造成本高。

TPU is a thermoplastic polyurethane with excellent wear resistance, ozone resistance, high strength, good elasticity, good low temperature resistance, oil resistance, chemical resistance and other properties, which is green and environmental protection; In addition, the cold resistance of TPU is also very outstanding (no pressure at minus 40 degrees), with strong toughness and certain hardness. It is a good material for invisible car clothes, with a service life of 5-10 years. Disadvantages: complex production process, low cost rate and high manufacturing cost.

如何辨别不同材质隐形车衣下面给大家介绍几种简单辨别车衣材质的方法：

How to distinguish invisible car clothes of different materials? Here are some simple methods to distinguish car clothes materials:

1、胶层测试

1. Adhesive layer test

用手指顶住膜，胶层露在外侧，在漆面上反复点击，检验粘连性是否下降、胶层是否会脱落，好的TPU材质一般配有好的胶层，可以反复以上操作50次不影响胶层性能。

Hold the film with your fingers, the adhesive layer is exposed on the outside, and click repeatedly on the paint surface to check whether the adhesion decreases and whether the adhesive layer will fall off. Good TPU materials are generally equipped with a good adhesive layer, which can be operated for more than 50 times without affecting the performance of the adhesive layer.

2、拉伸测试

2. Tensile test

TPU材质，很明显张开有韧性丝，有很好的韧性，可以还原，PVC的抗拉伸能力就很差了。

TPU material is obviously made of tenacious silk, which has good toughness and can be restored. The tensile resistance of PVC is very poor.

3、火烧

3. Burning

PVC和TPH热稳定性差，火烧会有明显变色和异味，TPU材质可以保持良好性能，短暂用火烧不会点燃，也不会变色，甚还能还原。

PVC and TPH have poor thermal stability, and there will be obvious discoloration and peculiar smell when burned. TPU material can maintain good performance. If burned briefly, it will not ignite, change color, or even restore.

4、钥匙划

4. Key stroke

PVC很硬，不会自动修复，TPH偏薄，TPU韧性强，自己划一下肯定是会有感觉的。同时TPU还能划痕自愈，加热秒还原。

PVC is very hard and will not be repaired automatically. TPH is thin and TPU has strong toughness. You will feel it if you draw it yourself. At the same time, TPU can self heal scratches and restore after heating for seconds.

TPU材质隐形车衣的突出优势稳定的自动修复能力，表层致密纳米涂层除了提供强大的抗腐蚀能力外，还能拥有更好的修复能力，在还原的时候不会吸入灰尘（市面上有些些材质吸灰严重，导致膜干涩无光），可以长久保持膜的完好和光线亮洁。很好的不沾污性能，远离外物腐蚀，长时间不黄变、不开裂等，拥有5-10年的质保时间，售后相对更加完整。

TPU invisible car clothing has outstanding advantages and stable automatic repair ability. In addition to providing strong corrosion resistance, the dense nano coating on the surface can also have better repair ability. It will not inhale dust during reduction (some materials in the market absorb dust seriously, resulting in dry and dull film), which can keep the film intact and bright and clean for a long time. Good non staining performance, far away from foreign corrosion, no yellowing and cracking for a long time, with a warranty period of 5-10 years, and the after-sales service is relatively more complete.